From: Brian Candler <B.Candler@...>
Date: 2003-05-03T07:12:19+09:00
Subject: Re: Embedded Ruby in C can't find external libraries. Help !!

On Sat, May 03, 2003 at 05:08:30AM +0900, Yen-Ju Chen wrote:
> I try to embed Ruby in C, and it works fine.
> But if there is 'requre" in ruby, it won't work.
> The test source code is here:
> 
> #include <ruby.h>
> 
> int main()
> {
>   int state;
> 
>   ruby_init();
> 
>   rb_eval_string_protect("require 'test/unit'\nputs 'Ruby Test'", &state);
>  
>   if (state) {
>     VALUE c = rb_funcall(rb_gv_get("$!"), rb_intern("to_s"), 0);
>     printf("Error: %s\n", RSTRING(c)->ptr);
>   }
> 
>   return 0;
> }
> 
> It will complain "No such file to load -- test/unit" (Test::Unit),
> which is installed and works fine in normal ruby application.
> 
> Did I miss something ?

I tried adding "p $:" into your eval, and it shows that $: ($LOAD_PATH) is
set to the empty array.

The solution is to add a call to
   ruby_init_loadpath();
after ruby_init()

Regards,

Brian.